Moved the entire website from Mambo to Joomla only to allow me to use Registration Pro.
Needed CB1.2 integration and Mike came back and sorted out the latest version in a few minutes.
Can do with more features in the upcoming releases like:
1. Mapping firstname/lastname straight from CB rather than having to re-type the names in.
2. Differential pricing for non-members and members. Allowing non-members of the site to register for events and collecting payment for that. For the same event, allowing members to register for free.
3. Automatically informing a registered attendee that they have already registered and do not have to do so again.
But, the tool is great and management of our events is a breeze.